A liquid cooling system is a type of computer cooling system that uses liquid, typically water or a specialized coolant, to transfer heat away from components such as CPUs and GPUs. The liquid circulates through a closed loop, absorbing the heat generated by these components and carrying it away to be dissipated into the air or via other means. This type of system is commonly used in high-performance computing environments where efficient cooling is critical for maintaining optimal performance and preventing overheating.